Gear



' Aug. 25. 1925. 1,550,867 n H. F. BEcHMAN 'GEAR FiledV May 5,1924 5sheets-sheet 1 AND MECHNS" Aug. 25, 1925. www? H. r-f. BECHMAN Y FiledMay 5. 7.924 3 Sheets-Sheet z I u WM.

l a rr Patented Aug. 25, 1925.

UNITED STATES PATENT OFFICE.

HENRY F. BECI-IMAN, OF BATTLE CREEK, MICHIGAN, ASSIGNOR TO DUPLEXPRINTING PRESS COMPANY, 0F BATTLE CREEK, MICHIGAN, A CORPORATION OFMICHIGAN.

GEAR.

Application filed May 5, 1924. Serial No. 711,219.

T0 all whom t may concern:

Be it known that I, HENRY F. BEGHMAN, a citizen of the United States,residing at Battle Greek, in the county of Calhoun and State ofMichigan, have invented certain new and useful Improvements in Gears;and I hereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawingswhich form part of this specification.

This invention relates to rotary printing presses in which each printingunit o-rdinarily comprises two plates and two impression cylindersintergeared torotate at uniform peripheral speeds.

The invention is an improvement upon the single page tubular rotaryprinting presses such as described in my Patents #867,230, dated October1, 1907, and #1,223,025,'dated April 17, 1917. The primary object of thepresent invention is to provide improved means for maintaining thecylinders in gear with the driving mechanism, and permit the readyplacing of tubular plates upon the cylinders or removal of tubularplates therefrom. A subsidiary object of the invention is to provide anovel gear which may be used in the place of the gapped gears shown inmy Patent #1,223,025, such novel gear having a radially displaceabletoothed sector of such size that when the cylinder is turned to platingposition the sector may be retracted to open the gap and permit atubular plate to be slid onto or removed from the plate cylinder asdescribed in my said patent; and after the plates are in position andthe press is ready for operation the sector may be projected so as toclose the gap and produce a complete toothed gear which will remaincontinually in mesh with the opposed gears during the operation of themachine. While, as such novel gear is practically designed for use inconnection with presses as shown in my said pat-ents, the novel gear canbe used in various other mechanisms, and the invention is not restrictedto any particular location or use of said gear.

I will explain the invention with reference to the accompanyingdrawings, which illustrate a practical embodiment and applicationthereof; and summarize in the claims the essentials of the invention andthe novel fea-tures and combinations of parts for which protection isdesired.

In t-he drawings:

Figure 1 is a diagrammatic end elevation of a plate and impressioncylinder of the type shown in my said Patent #1,223,025, and gearing fordriving the same, including my novel gear.

Figure 2 is a side view of Figure 1, partly broken away.

Figure 3 is a diagrammatic end elevation of two plate and two impressioncylinders suitably intergeared and one of such cylinders having my novelgear] on one end thereof.

Figure A is an enlarged view of the novel gear detached.

Figure 5 is a vertical section of the gear.

Figure 6 is a sectional view on the line 6 6, Figure 5.

Figure 7 is a sectional view on the line 7 7, Figure 5.

Figure 8 is a detail sectional view on the line 8-8, Figure 5,illustrating the pin 3.

As shown in Figures l and 2, each printing couple comprises a platecylinder P and an impression cylinder I. Preferably the impressioncylinder I is twice the diameter of the plate cylinder. In theconstruction shown in Figs. 1 and 2, each plate cylinder P is adapted tocarry tubular plates FX and each plate practically surrounds thecircumference of the plate cylinder, except for the one narrow marginalslot, which is adapted to engage a rib on the plate cylinder,substantially as described in my Patent #97 9,919.

Each end of the plate cylinder is journalled in a bearing B which issupported by a narrow neck B, (Fig. l) upon the main frame F or a partattached to the main frame. Said neck B is slightly less in width thanthe slot in the plate PX, and

the bearing B is slightly less in exterior diameter than the interiordiameter of the plate cylinder, so that a tubular plate PX can beslipped endwise onto the cylinder, .over either end thereof and over thebearing B, by turning the cylinder so that the rib thereof registerswith the shank B of the adjacent bearing. The plates PX can thus beslipped endwise onto and oil of the cylinder substantially as describedin my Patent #979,919 aforesaid.

The plate cylinder P has a gear P2, on each end, which gears do notexceed in over all diameter the diameter of the cylinder. Each of thegears P2 is adapted to mesh with a novel gear 1, gears 1 being mountedon the opposite ends of a shaft S, journalled in the frame F below theshaft P of the cylinder P. These gears 1 take the place of the gappedgears 8C, 8e, shown in my said Patent #1,223,025.

The gears 1 mesh with driving pinions D on a drive shaft D. The pinionsD and I are of the same size, so that the plate cylinder makes onerotation for each rotation of the shaft D. The impression cylinder I,mounted on the shaft lf, may be driven by means of a gear I2, meshingwith a gear D2, on shaft D. The gear D2 is practically the same size asgear D, and goal l2 twice the diameter of the gear D2, so that theimpression cylinder I makes one revolution to each two revolutions ofthe plate cylinder P.

The gear 1 may be of any desired diameter, and is formed with a radiallydisposed slot gap 1b in its periphery; and in this gap is fitted aradially movable sector 2, the outer surface of which is curved andtoothed 'lo correspond with the curvature .of the teeth on the peripheryof the gear; and when this sector is in its normal outermost position(as shown in Figs. 1, 2 and 4) the teeth 2a of the sector form acontinuation of the teeth 1a of the gear.

The sector 2 is closely fit-ted in the slot 1"; and is preferablyintegrally formed with a yoke 2b, which is slidably mounted in a` recesslr in the face of the gear (see Figs. 8 and 4). Said yoke has an openingof larger diameter than the hub le of the gear 1 to permit the yoke tomove transversely of the shaft. Said yoke loosely embraces the hub andthe opposite sides of the hub are dressed parallel (as indicated at lfFigure 6) to engage the opposed dressed parallel surfaces of the innersides of the yoke, and guide the yoke.

The yoke acts as al guide and brace for the sector 2; and the yoke 2bcarries a pin 1g on its lower end, which pin preferably carries a roller1h, (Figs. 5 and 7) and this roller is adapted to be engaged by a camsurface 4h on .one side of an arcuate slot or recess in the inner faceof a hand wheel 4, (Figs. 5 and 7) which is rotatably mounted upon thereduced end 1k of the hub .of the gear 1. Said hand wheel 4 may beconfined on the hub by means of a disk 5 secured by bolts 5fu to the endof the shaft S on. which the gear l is splined.

The recess 1r in the gear 1 permits the yoke 21 to be moved transverselyof the shaft S to draw the block 2 inward toward the shaft S or to movethe sector 2 outward.

The sector 2 has on its outer face a projecting are shaped rib 2n(Figures 5, 6 and 7) which is adapted to be engaged on its inner side bya projection 4n on the hand wheel 4, when the sector is projected, asshown in Figures 4 and (i.

The hand wheel 4 has a forwardly projecting annular iiange 4s on itsfront face, the perimeter of which is preferably corrugated to enablethe operator to firmly grasp the iiange when he desires to turn thewheel. rPhis hand wheel 4 may be locked in the position shown in Figures4 and 5 so as to hold sector 2 securely in its outermost position by anysuitable devices.

/Vhen in its outermost operative position, the teeth 2a of the sector 2form a continuation of the teeth 1a of the gear 1; and the sector issupported and held in this operative position and against inward radialmovement by the part 2l1 thereof bearing upon the part 4 of wheel 4; andthe sector is held against longitudinal play or chatter by the yoke 21engaging the parts 1f of the wheel hub; and confined between the innerface of the wheel 4 and the outer faceof the gear l.

As a further means of preventing play or chatter of the sector, afriction pin 3 may be inserted in a recess 3 in either end of thesector, and is pressed outward against the adjacent side of the slot 1b,by means of a spring 3b, as indicated in Figures (3 and 8.

rlfhe pin 3 and spring 3" should be inserted in that end of the sectoropposite the direction of rotation of the gear; that is, if the gearturned to the right the pin should be at the left hand end of the sectorso as to press the block toward the right. If the gear is turned to theleft, the pin should be placed at the right hand end of the sector so asto press the sector toward the left.

The sector can be retracted, as stated, by the engagement of the camsurface 4h with the roller 1h. `When the sector is fully rctracted, asindicated in Figure 6, the roller lh will occupy the end of the cam slot4s as indicated in dotted lines in Figure 7. Then the sector isprojected to operative position, the hand wheel is turned in a reversedirection to that indicated by the arrow in Figure 7, whereupon theroller will be engaged by the cam surface 4t of the slot 4S, oppositethe face 4, until the sector is projected to the proper posit-ion. Justbefore the roller 4h clears the cam surface 4t, the part 4n enters underthe projection 2, and becomes completely engaged therewith by the timethe hand wheel has completed its return movementto the positionindicated in full lines in Figure 7.

The sector 2 and the wheel 4 may be locked in the positions shown inFigures 4 and 5 by means of a bolt 6 (Figure 3) slidably mounted in asocket 6a in the disk 5; said bolt 6 is normally projected by a spring6"; and the bolt is provided with a pin 6c enllO Lesage? 3 N a gagingslots 61 1n the sides. of the socket, speeds. The no-vel gear l 1s shownas as shown in Figure 3. The bolt 6 is adapted to engage a socket lt ina pro-j ection 4V on the under side of flange ls (see Figure 5). In thissocket 4F is a. plunger 7 having a stem 7 a projecting bey-ond theperiphery of the flange 4S. The Aplun ger 7 is normally pressed inwardby a spring 7b of less strength than the spring 6b. On the. outer end ofthe stem 7a is a button or head 7 d.

When the bolt 6 registers with the socket 4st, it will enter the latter,pushing the plunger 7 outward.

Ilhen it is desired to disengage the bolt, the plunger 7 is pushedinward by pressure on the bottom 7 d until the bolt 6 is clear of thesocket llt, whereupon the. hand wheel ll can be turned in the directionof the arrow in Figure 5. lWhen thus turning the wheel, the projection4l will first be moved out of the path of the projection 2, and then thecam portion lh of the Wheel 4 will engage the roller 1h, and force thelatter radially outward thereby moving the yoke 2b so as to draw theblock 2 inward to the retracted position shown in dotted lines in Figure7.

The gears l are so relatively placed on shatt S that when the. sector 2ot one gear l is engaged with the opposed gear P2, the sector 2 of theother gear l is not in mesh with its opposed gear P2. TWhen it isdesired to place the cylinder, at either end,

the gear 1 is turned until the sector 2 is in mesh with the gear P2.The-n the sect-or is retracted as indicated in Figure l, and the platesPX can then be slid endwise onto the cylinder, the lower portion olf theplate passing through the gap left in the gear l by the retraction ofthe sector 2. After the plates are in position the sector is movedoutward into mesh with the gear P2 and thus the. gap is closed. Plat-escan be slipped on o-r taken oit at either end of the cylinder bymanipulating the sectors as described. lith this arrangement, during theoperation of `the press, there is always a continuous mesh between thegears 1 and the gears P2, except when the plates PX are to be placed onor removed from the cylinder. In my aforesaid patent, no means wereprovided for iilling gaps in the segmental gears and consequently thecylinder was driven momentarily from opposite ends according to whetherthe segmental gears were in or out of mesh. In the present invention,when the machine is in operation and the sectors are properly adjusted,there is continuous uniform gearing between the shaft S and the cylinderP.

In Figure 3 I have shown two plate cylinders P, disposed on oppositesides of two impression cylinders I,.I. The cylinders are `provided withintermeshing gears, whereby all the cylinders are caused to rotate inunison and at the same peripheral mounted on one end of one of theimpression cylinders, and meshes with a gear T torming one of' a driventrain of gears, not shown.

It the cylinders indicated in Figure 3 should be turned until the sector2a of gear l meshes with the gear on the adjacent cylinder I, and thenthe sector retracted, the right hand cylinders I and P could be turnedwithout affecting the lett hand cylinders. If the cylinder l Was turnedso that the sector 2a meshes with the gear T, and then t-he sector 2 wasretracted, the rest of the machine could be run without alecting orrotating the cylinders.

The gear 1 could be put in the place of the gear T; in which case it thegears are turned until the teeth on sector 2 mesh with the cylinder gearand the sector is then retracted, the cylinders could be turned by hand,as desired, while the rest of the press was idle.

It is obvious that if a gear like the gear l be interposed at any pointin a train of gearing, or attached to any member to be driven by anopposed gear, that upon turning the gear to a position where the teethon sector 2 mesh with the opposed gear and then retracting the sector 2,transmission of motion from one gear to the other will be prevented. Byusing such a gear the necessity for having a slip gear or a clutch canbe obviated in many places where a slip gear or clutch is now required.lith such a gear, all the operator has to do when he desires todisconnect the gear is simply to see that the sector 2 is in mesh withthe gear it is desired to disengage; and then by disengaging the bolt Gfrom the plate and giving the hand wheel 4 a partial revolution in theproper direction, the sector can be retracted and the gears thrown outof mesh. To return the gear to mesh, all the operator has to do is togive the handwheel 4f a partial revolution in the reverse direction, soas to move the sector 2 to its projected position; in which position itwill be locked by the engagement of bolt 6 with the wheel 4.

I claim:

l. A gear having a radial slot; a toothed sec-tor movably mounted insaid slot; and a wheel rotatably mounted adjacent the gear having a camportion adapted to move the sector inward or outward.

2. A gear having a radial slot; a toothed sector mounted to moveradially in said slot; and a Wheel rotatably mounted upon the hub of thegear having a cam portion adapted to 'move the sector inward or outward;and means for fastening the wheel in adjusted position.

3. A gear having a radial slot; a toothed sector mounted to move in saidslot; and a wheel rotatably mounted adjacent the gear CII having a camportion adapted to move the sector inward or outward; and a portionadapted to engage the sector and hold it in its projected position.

4. A gear having a radial slot; a toot-hed sector mounted to moveradially in said slot; and a wheel rotatably mounted upon the hub of thegear having' a cam portion adapted to cause the sector to move inward oroutward; said wheel also having a portion adapted to engage the sectorand to hold the latter in its projected position.

5. A gea-r wheel having a peripheral slot; a sector slidably fitted insaid slot and having a toothed portion adapted to form a continuation ofthe toothed portion of the gear when the sector is in its outermostposition; a hand wheel rotatably mounted on the gear and having aportion adapted to engage the sector to hold the latter in its projectedposition and also having a cam portion adapted to cause the projectionor the retraction of the sector.

6. In a gear wheel as set forth in claim 5, means for locking the wheelin adjusted position when the sector is outermost.

7. A gear wheel having a peripheral slot or gap; a sector slidablyfitted in said gap and having a toot-hed portion adapted to form acontinuation of the toothed portion of the gear when the sector is inits outermost position; a hand wheel rotatably mounted on the gear andhaving a portion adapted to engage the sector to hold the latter in itsretracted position, and also having a cam portion adapted to cause theprojection or the retraction of the sector; the sector engaging portionof the wheel being so located that the said portion will be disengagedfrom the sector before the latter is moved inward, and will be engagedwith the sector after the latter is moved outward.

S. In a gear wheel as set forth in claim 7, means for retaining thewheel in position relative to the gear; and means for locking the wheelin adjusted position when the sector is outermost.

9. A gear having a radial slot; a toothed sector mounted to move in saidslot; a` member connected with said sector; a wheel rotatably mountedadjacent the gea-r and having a cani portion adapted to engage themember on the gear to cause the latter to move the sector either inwardor outward.

10. A gear having a radial slot; a toothed sector mounted to moveradially in said slot; a yoke connected with said sector and embracingthe hub of the gear, a wheel rotatably mounted upon the hub of the gearhaving a cam portion adapted to engage the yoke on the gear and causethe latter to move the sector inward or outward; and means for fasteningthe sector while in adj usted position.

1l. A gear having a radial slot; a toothed sector mounted to move insaid slot; a yoke connected with said sector within a recess in the faceof the gear; and a wheel rotatably mounted adjacent the gear having acam portion adapted to engage the yoke and cause the latter to move thesector inward or outward; said wheel also having a portion adapted toengage the sector to hold the latter in its projected position.

l2. A gear having a radial slot; a toothed sector mounted to moveradially in said slot; a yoke connected with said sector and mountedwithin a recess in the face of the gear; and embracing the hub of thegear; and a wheel rotatably mounted upon the hub of the gear having acam portion adapted to engage the yoke and cause the latter to move thesector inward or outward; said wheel also having a portion adapted toengage the sector and to hold the latter in its projected position.

13. A gear wheel having a peripheral slot or gap; a sector slidablyfitted in said gap having a toothed portion adapted to form acontinuation of the toothed portion of the gear when the sector is inits outermost position; a yoke connected with said sector; said sectorhaving an inwardly projecting rib on the face adjacent the yoke; a handwheel rotatably mounted on the gear and having a portion adapted toengage the rib on the sector to hold the latter in its retractedposition and also having a cani portion adapted to engage the yoke andmove the latter to cause the projection or the retraction of the sector;and means for locking the wheel in adjusted position when the sector isoutermost.

14. A gear wheel having a peripheral slot or gap; a sector slidablyfitted in said gap having a toothed portion adapted to form acontinuation of the toothed portion of the gear when the sector is inits outermost position; said sector having a projecting lug on one face;a yoke connected with said sector and movably mounted within a recess inthe gear, a hand wheel rotatably mounted on the gear and having a camportion adapted to engage the lug on the sector to hold the latter inits projected position and also having a cam portion adapted to engagethe yoke to move the latter to cause the projection or the retraction ofthe sector; the lug engaging portion of the wheel being so located thatsaid portion will be disengaged from the lug before the sector is movedinward, and will be engaged with the lug after the sector is movedoutward.

l5. A gear wheel having a peripheral slot or gap; a sector slidablyfitted in said gap and having a toothed portion adapted to form acontinuation of the toothed portion of the gear when the sector is inits outermost position; a yoke connected with said sector, said yokeembracing the hub of the will Mlliatilltii at be i a gear and having itssides slidably fitted to rotatably mounted on the hub of thegear 20 thefaces of the huh to guide the yoke; a hand Wheel rotatably mounted onthe hub oi' the gear and having a cam portion adapted to engage the yoketo move the latter to cause the projection or the retraction of thesector; means for retaining the Wheel in position on the gear; and meansfor locking the Wheel when the sector is projected.

16. A gear Wheel having a peripheral slot or gap; a sector slidablylit-ted in said gap and having a toothed portion adapted to form acontinuation of the toothed portion of the gear when the sector is inits outermost position; a yoke connected with said sector, said yokeembracing the huh of the gear and having its sides slidaloly fitted tothe faces of the huh to guide the yoke; said sector having a projectinglug; a hand Wheel and having a portion adapted to engage the lug on thesector to hold the latter in its projected position, and also having acam portion adapted to engage the yoke to move the latter to cause theprojection or the retraction of the sector; the lug engaging portion ofthe Wheel heilig so located that the lug engaging portion Will hedisengaged from the lug before the sector is moved in- Ward, and will heengaged with the lug after the sector is moved outward.

17. In a gear Wheel as set forth in claim 16, means for retaining theWheel in position on the gear; and means for locking the Wheel when thesector is projected.

In testimony that I claim the foregoing as my own, I atiix my signature.

HENRY F. BECHMAN.

